I've also found info on the DHC 7A "Caribou":

C-7A Principal Dimensions

Wing Span 95 feet 8 inches
Length 74 feet 0 inches
Height 31 feet 9 inches
Maximum Gross Weight* 28,500 pounds
Powerplants (2) Pratt & Whitney R2000-7M2

* Normal operations - 33,000 pounds for ferry operations


Here are also three views of the DHC 7A Caribou (notice that the nose on the 7A is different to that of the 4A):

(found at http://www.c-7acaribou.com/c7a_aircraft.htm)